—We’re supposed to recycle paper and bottles．It can help the environment．
—________．It can save money，too．
| A．It’s nothing |
| B．Best wishes |
| C．I agree |
| D．Never mind |
— A computer is very popular and helpful .
— I think so. It _______ in many different fields.
| A．used | B．will use |
| C．is used | D．was used |
My uncle is an experienced teacher. He_____English since 2002.
| A．teaches | B．taught |
| C．has taught | D．will teach |
Mr. Green _______ his lessons when I went into his office.
| A．prepares | B．prepared |
| C．is preparing | D．was preparing |
—Tom, What did you do last Sunday morning ?
— I _______ my grandma with my parents .
| A．visited | B．visit |
| C．will visit | D．have visited |
Ourteacher usually gets to school a little _______ than our students.
| A．early | B．earlier |
| C．earliest | D．the earliest |